Daisy \da(i)-sy\ as a girl's name is pronounced DAY-zee. It is of Old English origin, and the meaning of Daisy is "day's eye". A flower name. Often used as a nickname for Margaret, where in France, the flower is called a "marguerite". Literary: Henry James named the typical American girl in Europe as Daisy Miller in his story. The variant Deyse is common in Brazil. Actress Daisy Fuentes.
For more information, see also the related name Rosa.